The equations of four circles are (x±a)2+(y±a)2=a2 The radius of a circle touching all the four circles is
see full answer
Your Exam Success, Personally Taken Care Of
1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.
An Intiative by Sri Chaitanya
a
(2+2)a
b
22a
c
(2+1)a
d
(2+2)a
answer is C.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
The four circle are as shown in the figure.The smallest circle touching all of them has radius 2a-aand the greatest circle touching all of them has radius 2a+a